A simple self-calibrating method to measure the height of fluorescent molecules and beads at nanoscale resolution.
Nano Lett
; 14(8): 4469-75, 2014 Aug 13.
Article
em En
| MEDLINE
| ID: mdl-25014485
ABSTRACT
We describe a simple self-calibrating technique, incident-beam interference sweeping, for measuring the height of fluorescent labels. Using a tilted back-reflecting mirror and a scanning laser beam, a modulated fluorescence emission allows height determination of a label from a surface with a resolution of â¼ 3 nm. In addition, we show that the absolute distance of a label from the top-mounted mirror can be determined with a resolution of a few tens of nanometers over a micrometer range.
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Coleções:
01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article